favorite_language = {'jack': 'C++',
                     'pony': 'C',
                     'robby': 'Python',
                     'mask': 'go',
                     'danny': 'Python'
                     }
for key, value in favorite_language.items():
    print(f'key:{key}')
    print(f'value:{value}')

print('------------------------------')
for name, language in favorite_language.items():
    print(f"name:{name}")
    print(f"language:{language}")

print('------------------------------')
for name in favorite_language.keys():
    print(f"name:{name}")

print('------------------------------')
for value in favorite_language.values():
    print(f"value:{value}")

print('------------------------------')
for value in set(favorite_language.values()):
    print(f"value:{value}")